The age hardening characteristic of as - cast cu20ni20mn and cu20ni35mn alloys and the interface characteristic between the alloy and cast tungsten carbide were studied, and on the basis of this study, composites of cu - ni - mn alloy reinforced with different volume fraction ( 0 - 45vol. % ) and different size ( 42 - 362 m ) of cast tungsten carbide particles were made by vacuum hot - pressing liquid sintering technology. pin on disk two body abrasion tests have been performed with different size of sic abrasive under different loads
本文研究了鑄態cu20ni20mn和cu20ni35mn合金
的時效硬化特性及其與鑄造碳化
鎢的界面特性，並在此基礎上以不同尺寸（ 42 362 m ）
的鑄造碳化
鎢顆粒為增強體，採用真空熱壓液相燒結技術制備了不同顆粒含量（ 0 45vol . ）
的鑄造碳化
鎢顆粒增強cu - ni - mn合金基復合材料；以不同粒度
的sic為磨料，在不同載荷條件下利用銷?盤磨損試驗機測試了復合材料
的二體磨料磨損性能。
Surface dispersivity of tungsten and hydrodenitrogenation activity of tungsten - based catalysts
鎢基催化劑上
鎢的分散性和加氫脫氮性能
Chemical analysis of ferro - tungsten. gravimetric determination of tungsten
鎢鐵
的化學分析.
鎢的重量測定法
Mixing alloy elements of ni, mo, w in fe - c - cu alloy, the sintered steel was prepared. the microstructure and wear resistance properties of the sintered steel had been studied. the influence of heat - treated technology and the alloy elements on the microstructure and the wear resistance had been studied and analyzed
以fe - c - cu合金為基粉，添加合金元素ni 、 mo 、 w制備燒結鋼，並對試樣進行了微觀組織和耐磨性分析，系統地研究了熱處理工藝及合金元素鎳、鉬、
鎢的復合添加對燒結鋼組織和耐磨性
的影響。
Results of the experiments showed that the wear mechanisms of the sintered steel included abrasive wear, adhesive wear and fatigue wear, and it was the abrasive wear most important. it was the sintered steel mixed by ni, mo that was the best on the wear resistance, because of the great lot of bainite ; the sintered steel quenched and low temperature tempered mixed by mo, w that was the best on the wear resistance, because of the rigidity of the steel was the highest
實驗結果表明：本文中幾種燒結鋼
的磨損機制均是由磨粒磨損、粘著磨損、和疲勞磨損共同作用
的，且以磨粒磨損為主；在燒結態下，復合添加合金元素鎳、鉬
的燒結鋼
的耐磨性能最好，這是因為生成了大量
的硬質相貝氏體；而淬火、低溫回火態下，則復合添加鉬、
鎢的燒結鋼
的耐磨性能最好，這是因為熱處理態下添加鉬、
鎢的燒結鋼
的硬度最高。
Dispersibility of w species on the surface of w tio2 catalysts
2催化劑表面上
鎢的分散性
The surface dispersion of w species on w al - clm and w - al2o3 catalysts
3催化劑上
鎢的分散性能
Successive determination of molybdenum and tungsten in steel and alloy
鋼鐵及合金中鉬
鎢的連測
Methods for determination of tungsten in ores
礦石中
鎢的測定方法
Mothod of tungsten spectral analysis
鎢的光譜分析方法
Uranium dioxide powder and pellets - determination of tungsten - spectrophotometric method
二氧化鈾粉末和芯塊中
鎢的測定分光光度法
Abstract : comparision is made between the characteristics of recovered wcand conventional wc by clectronic probe detection. in view of perfect crystal lization, less defect in the crystal and sufficient compound carbon, cemented carbide superior to conventional wc is developed by process optimization to compensate for the high o2 content and more inclusions in the recovered wc
文摘:用電子探針檢測手段對比了回收碳化
鎢和一般碳化
鎢的不同特性，從回收碳化
鎢具有結晶完整、晶內缺陷少、化合碳充足等優良性能出發，用工藝優化手段彌補回收碳化
鎢氧含量高、夾雜物多等缺點，試制出了性能優于用一般碳化
鎢生產
的硬質合金。
The tribological characteristics of ultrafine ws2 powders added in engine oil have been investigated by four - ball machine test, and compared with chloroparaffins ( t302 ) and molybdenum disulphide ( mos2 ), and meanwhile we have analyzed the tribochemical species of the worn surface by means of x - ray photoelectron spectroscope ( xps ), to research the lubricating mechanism of ws2
摘要採用四球摩擦實驗機對二硫化
鎢超細粉末在發動機油中
的摩擦學性能進行了研究，並與添加劑氯化石蠟和二硫化鉬進行了比較，同時用x射線光電子能譜儀對磨痕表面元素進行分析，以探討二硫化
鎢的潤滑機理。
And ti in the films are tio _ 2 structure. w in the films are two forms ? ? simple substance and wo3, and the ratio of two forms is 6. 4 : 1
並且w以wo _ 3形式和單質態存在，六價鎢和單質鎢的原子濃度比為6 . 4 : 1 。
